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Date:      Wed, 10 Apr 2002 13:18:16 +0100
From:      David Malone <dwmalone@maths.tcd.ie>
To:        Jordan Hubbard <jkh@winston.freebsd.org>
Cc:        Christopher Masto <chris@netmonger.net>, Murray Stokely <murray@FreeBSD.ORG>, Greg 'groggy' Lehey <grog@FreeBSD.ORG>, msmith@FreeBSD.ORG, "David E. O'Brien" <obrien@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: Configuring XFree 4 (was: cvs commit: src/usr.sbin/sysinstall Makefile dispatch.c dist.c install.c menus.c sysinstall.8) 
Message-ID:   <200204101318.aa20574@salmon.maths.tcd.ie>
In-Reply-To: Your message of "Tue, 09 Apr 2002 17:33:44 PDT." <49076.1018398824@winston.freebsd.org> 

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> Woohoo!  You rock!  I'm now looking at a 1280x1024x32 screen on this
> same desktop machine, admirably panic-free since applying your
> patches!

Excilent. Any complications when shutting down? I've tracked the
complications I'm seeing, and it is something to do with ACPI calls
causing the machine to hang up - I think my BIOS is just nuts actually...

> When I launched the X -configure this time, it printed the following stuff
> out on the console:

> MSR 26e, old=1515151515151515 new=101010101010101
> MSR 26f, old=1515151515151515 new=101010101010101

Yep - 0x15 is what the bios is setting the MTRR to, which according
to most documentation should cause a GPF. The old code goes mad when
it finds these undocumented values.

The 0x01 value X is writing in should be perfectly legal, so I don't
understand why it is upsetting ACPI calls.

> Mike Smith would certainly be the man to review your patches since he wrote
> much (all?) of the original MTRR code.

If Mike could review them, that would be perfect as he is probably
the best man to comment on the ACPI interaction. I'll see if I can
find anyone else to cast an eye over them.

Should I aim to get these into 4.6?

	David.

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